3,4-dihydro-2H-pyran-2-carbaldehyde

3,4-dihydro-2H-pyran-2-carbaldehyde is an organic compound with the molecular formula C6H8O2 and CAS number 100-73-2. It belongs to the pyran family, featuring a six-membered heterocyclic ring containing one oxygen atom and an aldehyde functional group. With a molecular weight of 112.13 g/mol, this compound is commonly used as an intermediate in organic synthesis and pharmaceutical applications due to its reactive aldehyde group and cyclic structure.

3,4-dihydro-2H-pyran-2-carbaldehyde is typically a colorless to pale yellow liquid at room temperature with a characteristic aldehyde odor. The compound exhibits moderate volatility and is soluble in organic solvents such as ethanol, methanol, and acetone, while having limited solubility in water. Its boiling point and other specific physical properties depend on purity and environmental conditions, making proper characterization essential for industrial applications.

3,4-dihydro-2H-pyran-2-carbaldehyde serves primarily as an intermediate in organic synthesis and pharmaceutical manufacturing. It is utilized in the production of various heterocyclic compounds, agrochemicals, and fine chemicals. The compound's reactive aldehyde functionality makes it valuable for condensation reactions, cyclizations, and other synthetic transformations. Additionally, it finds applications in fragrance and flavor chemistry due to its structural characteristics and potential aromatic properties.

Safe handling of 3,4-dihydro-2H-pyran-2-carbaldehyde requires standard laboratory safety practices including wearing appropriate personal protective equipment such as safety goggles, gloves, and lab coats. Work should be conducted in well-ventilated areas or under fume hoods to avoid inhalation exposure. Avoid contact with skin, eyes, and clothing. Use proper grounding techniques when transferring the material to prevent static electricity buildup, and keep away from heat sources and open flames.

3,4-dihydro-2H-pyran-2-carbaldehyde should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight and heat sources. The storage area should be kept below 25°C to maintain product stability. Keep containers away from oxidizing agents and strong acids or bases that could cause unwanted reactions. Regular inspection of containers for leaks or deterioration is recommended, and inventory should follow first-in-first-out rotation principles.

In case of skin contact with 3,4-dihydro-2H-pyran-2-carbaldehyde, immediately wash the affected area with plenty of soap and water for at least 15 minutes. For eye contact, flush thoroughly with clean water for 15 minutes and seek medical attention. If inhaled, move the person to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention. Remove contaminated clothing and wash before reuse. Always consult the safety data sheet for specific emergency procedures.

Disposal of 3,4-dihydro-2H-pyran-2-carbaldehyde must comply with local, national, and EU waste regulations. The compound should be treated as hazardous chemical waste and disposed of through licensed waste management companies specialized in organic chemical disposal. Never dispose of it down drains or in regular trash. Small quantities may be suitable for controlled incineration at appropriate facilities. Always consult local environmental authorities and waste disposal regulations before disposal.

3,4-dihydro-2H-pyran-2-carbaldehyde is classified under ADR Class 3 (flammable liquids), Packing Group III for transportation purposes. It must be packaged in appropriate UN-approved containers and labeled according to ADR regulations. Transport vehicles must comply with ADR requirements for Class 3 substances, including proper placarding and driver certification. Shipping documentation must include proper shipping names, hazard classes, and UN numbers. Only qualified carriers experienced in hazardous materials transport should handle shipments.

3,4-dihydro-2H-pyran-2-carbaldehyde is subject to standard EU chemical regulations including REACH (Registration, Evaluation, Authorization of Chemicals) and CLP (Classification, Labelling and Packaging) requirements. It is not currently listed as a Substance of Very High Concern (SVHC). Manufacturers and importers must ensure proper registration under REACH for quantities above one tonne per year. Standard industrial chemical handling and workplace safety regulations apply, along with environmental protection requirements for emissions and waste management.

3,4-dihydro-2H-pyran-2-carbaldehyde is available through OYSI, a reliable European distributor of specialty chemicals and intermediates. OYSI provides high-quality chemical products to industries across Europe with comprehensive technical support and regulatory compliance documentation. As an established chemical distributor, OYSI ensures proper handling, storage, and transportation of chemicals while maintaining competitive pricing and reliable supply chains. Contact OYSI directly for availability, specifications, and pricing information for your specific requirements.